Muffler cooking attachment.



PATENTED DEC. 29, 1903.

J. H. FOX.

MUFFLER COOKING ATTACHMENT.

APPLICATION FILED MAR. 31. 1903.

N0 MODEL.

WITNESSES:

UNITED STATES Patented December 29, 1903.

PATENT OFFICE.

JOHN H. FOX, OF NEW YORK, N. Y.

SPECIFICATION forming part of Letters Patent No. 748,493, dated December29, 1903.

Application filed March 31,1903. Serial No. 150,408. [No model.)

.To all whom it may concern.-

Be it known that 1, JOHN H. FOX, a citizen of the United States, and aresident of the city of New York, borough of Brooklyn, in the county ofKings and State of New York,

have invented a new and Improved Muffler Cooking Attachment, of whichthe following is a full, clear, and exact description.

The purpose of the invention is to provide a muffler cooking attachmentespecially de signed for use in connection with the exhaust of hot-airengines, gasoline-engines, or engines of like type and to so constructthe device that it will be simple, durable, economic and eifective, andreadily applied to any hotair or steam-exhaustpipe.

Another purpose of the invention is to so construct the muffler cookingattachment that it will have a flat surface upon which the cookingvessels may rest and a removable guide for the vessels above suchsurface and to provide a casing loosely surrounding the muffler of whichthe guide forms a part, which casing is provided with air-vents at itsbottom surface, so that the muffler is practically jacketed in airheated by the radiant heat from the muffler, thus preventing the mufflerfrom being chilled by direct contact with the outside atmosphere,enablingall of the radiant heat from the muffler to be conducted to thevessels to be heated.

A further purpose of the invention is to so construct the muffler thatwhile it has a quick discharge-passage the incoming hot air is held fora maximum of time at the surface to be heated, and such surface isuniformly heated throughout its length and breadth.

The invention consists in the novel con struction and combination of theseveral parts, as will be hereinafter fully set forth, and pointed outin the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure 1 is a longitudinal vertical section through the improved mufflerheating attachment and a section through a portion of the exhaust-pipewithwhich it is connected, the section being taken practically on theline 1 1 of Fig. 2; and Fig. 2 is a transverse section taken practicallyon the line 2 2 of Fig. l.

A represents sections of an exhaust-pipe, and B represents a centralpipe for the muffler, which pipe is provided at its bottom with seriesof apertures 11 and at the top with corresponding series of apertures12. These apertures extend from a point near one end of the said pipe Bto a point near its opposite end. The pipe Bis divided into an upperchamber 0 and a lower chamber 0 bya partition-plate 13, more or lesscurved in direction of its length, and one end of this partition-plate13 is secured to the bottom portion of the center pipe 13 of themufiflerat the inlet end 1) of the said pipe by means of screws or rivets 14,the attachment being made at a point beyond what may be termed the inneraperture of the series 11, as is shown in Fig. 1, and thispartition-plate is carried upward and in direction of the outlet end I)of the center pipe B of the muffler and is attached by rivets or screws15 to the upper wall of the said center pipe B of the muffler at a pointbeyond the aperture 12 nearest the outlet end 5 of the said pipe. Thusit will be observed that the upper chamber 0 includes the upperapertured portion of the pipe B and is in direct communication with theinlet end I) of the said center pipe, while the lower chamber 0'includes the lower apertures 11 and is in direct communication with theoutlet end b of the said pipe B. The center pipe B of the muffler issecured to the sections of the exhaust-pipe A by means of unions 16 orother fittings.

In completing the construction of the mufiier a jacket D is employed,which jacket is of much greater diameter than the center pipe B, as isparticularly shown in Fig. 2. The upper surface 1'? of this jacket D isflat, and the vessels to be heated rest upon this upper flat surface.The side walls are practically straight, and the bottom portion 18 ofthe jacket is segmental, as is also shown in Fig. 2.

The jacket is open at its ends; but these ends are closed by means ofsuitable caps or heads 19, which are screwed upon the end portions ofthe center pipe B of the muiiier and are held in position by nuts 20 orlike devices, as is shown in Fig. l. The muffler thus formed is inclosedwithin a casing E. This casing E consists of a lower segmental section21 and an upper preferably rectangular section 22, both sections beingclosed at their ends. The lower section is likewise closed at itsbottom; but the upper section is open at top and bottom. These twosections 21 and 22 of the casing E are connected by suitable hinges 23,and at the ends of the casing openings are made partially in one sectionand partially in the other, whereby to receive the outer end portions ofthe center pipe B of the muffier, as is shown in Fig. 2, and the casingis held in position on the said center pipe B and around the jacket D ofthe muffler by locking devices of any suitable or approved construction.For example, spring-latches 24 are attached to the bottom section 21 ofthe casing, receiving keepers 25, which are secured to the upper section22 of the casing.

In connection with the casing A a flanged guide-plate F is employed,removably fitted in the top of the upper section 22 of the easing E, andthis flanged guide-plate is provided with openings 26 in its uppersurface, through which openings the vessels to be beated are introduceduntil they rest upon the upper flat surface 17 of the jacket of themuffier.

It will be observed that an uninterrupted chamber D is formed in themufler between the jacket and the center pipe B, and, further, that anuninterrupted chamber E is formed between the inner walls of the casingE and the outer surface of the muffler. Apertures 27 are made in thebottom of the lower section 21 of the casing E for the admission of air.

In operation the hot air, for example, enters the chamber C of themuffler at the inlet b of the center pipe B and passes the length of thepartition 13, finding a gradual exit out through the upper openings 12in the said center pipe and into the chamber D around the pipe. Theoutlet of the hot air is so slow through the apertures 12 that the hotair is held for a maximum of time in uniform contact with the flatsurface 17 of the jacket E throughout the length and width of saidjacket, thus heatingits surface to a maximum degree. The hot air afterit has escaped into the chamber D of the muflier travels to the bottomof its chamber and enters the lower chamber 0' in the center pipe Bthrough the bottom apertures 11 in the said pipe and finds an exit fromthe muffler through the discharge end I).

The cold air entering the chamber E between the jacket of the mufflerand the casing E becomes heated by engagement with the heated walls ofthe jacket 1), and this heated air serves to prevent the muffier frombeing chilled. The heated air likewise in finding its way upward and outthrough the openings 26 in the flanged guide-plate F serves to promotethe heating of the vessels placed directly upon the muffier.

This device is exceedingly simple. It is practical and, as stated, canbe readily applied or adapted to the exhaust-pipe of any hot-air orsimilar engine.

Having thus described my invention, I claim as new and desire to secureby Letters Patent 1. In a m uffler for heating purposes, a tube, animperforate partition in the tube, extending longitudinally thereof,dividing the same into two chambers, said tube being provided withperforations at opposite sides of the partition, for the purposedescribed.

2. In a muffler for heating purposes, a tube, a jacket for the tubespaced therefrom to form a continuous surrounding chamber, animperforate partition in the tube, which partition at opposite ends issecured to the tube at diametrically opposite points, said tube beingprovided with perforations at opposite sides of the partition, thechambers thus formed in the tube being in direct communication one withthe inlet and the other with the outlet end of the tube, as set forth.

3. A muffler cooking attachment, comprising a pipe, a jacket surroundingthe pipe, the pipe within the jacket being provided with upper and lowerseries of apertures, and a partition secured at one end to the bottom ofthe pipe at one end of the lower series of apertures, and at itsopposite end to the upper wall of the pipe at the opposite end of theupper series of apertures, thereby forming two chambers in communicationwith each end of the pipe, both chambers being in communication with thespace between the jacket and the pipe inclosed thereby. 4. A muffiercooking attachment, consisting of a jacket, a pipe extending through thesaid jacket, having apertures at the top and at the bottom, and apartition secured at its end respectively to the top and bottom of thepipe, dividing the pipe into two compartments both compartments being incommunication with the space between the jacket and the pipe, onecompartment being in connection with the inlet end of the pipe and theother with the outlet end of the pipe, a casing surrounding the saidjacket and spaced therefrom, having its upper portion adapted to receivevessels, the lower portion of the casing being apertured, for thepurpose described.

5. A muffier cooking attachment, consisting of a jacket, a pipe passedthrough the said jacket, provided with upper and lower series ofapertures, an inclined partition secured at one end to the bottom of thepipe and at the opposite end to the upper portion of the pipe, each endof the partition being beyond one end aperture'of a series, the upperportion of the said jacket being fiat, a casing surrounding the saidjacket, and a IIO guide-plate at the upper portion of the jacket,apertured to receive vessels, which vessels are adapted to rest on theupper flat surface of the jacket, as set forth.

6. A mufiier cooking attachment, consisting of a jacket, a pipe passedthrough the said jacket, provided with upper and lower series ofapertures, an inclined partition secured at one end to the bottom of thepipe and at the opposite end to the upper portion of the pipe, each endof the partition being beyond one end aperture of a series, the upperportion of the said jacket being fiat, a casing encircling the saidjacket, being spaced therefrom, which casing is constructed in hingedsections having openings at their ends to receive the extremities of thepipe within the jacket, the bottom section being open at the top andclosed at the bottom with the exception of the air-vents therein, theuppersection of the casing being open at top and bottom, locking devicesfor the two sections of the casing, and a flanged guide-plate fitted inthe upper portion of the uppersection of the casing and provided withopenings adapted to receive vessels to be heated, as set forth,

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JOHN H. FOX.

Witnesses:

J. FRED ACKER, JNo. M. BITTER.

